Tests stop working under xcode 8 TEST_HOST error

Question

I want to start tests under Xcode 8 and it fail in the beginning. My error is:

Could not determine bundle identifier for MyProjectTest\'s TEST_HOST:

Answer 1

Ok figure it out. There is a problem with naming packages. Unfortunatelly there is some issue with Xcode. I was using different Module Names for different Configurations. So go to Project -> Build Settings -> Product Module Name Change name in all configurations for same name without spaces.